| /***************************************************************************** |
| * File: drivers/usb/misc/vstusb.h |
| * |
| * Purpose: Support for the bulk USB Vernier Spectrophotometers |
| * |
| * Author: EQware Engineering, Inc. |
| * Oregon City, OR, USA 97045 |
| * |
| * Copyright: 2007, 2008 |
| * Vernier Software & Technology |
| * Beaverton, OR, USA 97005 |
| * |
| * Web: www.vernier.com |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| *****************************************************************************/ |
| /***************************************************************************** |
| * |
| * The vstusb module is a standard usb 'client' driver running on top of the |
| * standard usb host controller stack. |
| * |
| * In general, vstusb supports standard bulk usb pipes. It supports multiple |
| * devices and multiple pipes per device. |
| * |
| * The vstusb driver supports two interfaces: |
| * 1 - ioctl SEND_PIPE/RECV_PIPE - a general bulk write/read msg |
| * interface to any pipe with timeout support; |
| * 2 - standard read/write with ioctl config - offers standard read/write |
| * interface with ioctl configured pipes and timeouts. |
| * |
| * Both interfaces can be signal from other process and will abort its i/o |
| * operation. |
| * |
| * A timeout of 0 means NO timeout. The user can still terminate the read via |
| * signal. |
| * |
| * If using multiple threads with this driver, the user should ensure that |
| * any reads, writes, or ioctls are complete before closing the device. |
| * Changing read/write timeouts or pipes takes effect on next read/write. |
| * |
| *****************************************************************************/ |
| |
| struct vstusb_args { |
| union { |
| /* this struct is used for IOCTL_VSTUSB_SEND_PIPE, * |
| * IOCTL_VSTUSB_RECV_PIPE, and read()/write() fops */ |
| struct { |
| void *buffer; |
| size_t count; |
| unsigned int timeout_ms; |
| int pipe; |
| }; |
| |
| /* this one is used for IOCTL_VSTUSB_CONFIG_RW */ |
| struct { |
| int rd_pipe; |
| int rd_timeout_ms; |
| int wr_pipe; |
| int wr_timeout_ms; |
| }; |
| }; |
| }; |
| |
| #define VST_IOC_MAGIC 'L' |
| #define VST_IOC_FIRST 0x20 |
| #define IOCTL_VSTUSB_SEND_PIPE _IO(VST_IOC_MAGIC, VST_IOC_FIRST) |
| #define IOCTL_VSTUSB_RECV_PIPE _IO(VST_IOC_MAGIC, VST_IOC_FIRST + 1) |
| #define IOCTL_VSTUSB_CONFIG_RW _IO(VST_IOC_MAGIC, VST_IOC_FIRST + 2) |
